Strength of precast concrete shear joints reinforced with high-strength wire ropes

Joergensen, Henrik Broener; Hoang, Linh Cao; Hagsten, Lars German

doi:10.1680/jstbu.16.00096

Cited by 13 publications

(18 citation statements)

References 4 publications

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“…Similar load versus deformation behavior was observed by various researchers for specimen with loop boxes, as reported by Jorgensen . Also, similar behavior was observed by Jorgensen et al for T‐connections with single wire loop boxes.…”

Section: Test Resultssupporting

confidence: 89%

“…To eliminate the clashing of joint reinforcement, construction‐friendly reinforcement configuration was also studied . Also, the behavior of T‐connection (connection between exterior and interior wall panels) between precast panels were studied using U‐bars by Rossley et al and commercially available loop boxes by Jorgensen et al…”

Section: Literature Reviewmentioning

confidence: 99%

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Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

Biswal

Prasad

Sengupta

2018

Structural Concrete

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A precast wall‐type building is constructed by stacking wall panels and slabs. This paper presents a study of the in‐plane shear behavior of vertical grouted joints between precast panels. Thirteen jointed wall panel specimens were tested under direct shear. Based on the results, analytical expressions were developed to predict the shear load versus slip behavior. These can be used in computational models of precast wall type buildings, through modeling of shear springs between the panels. To demonstrate the application, a numerical analysis of an isolated jointed shear wall was performed. The wall was modeled for three cases, (a) monolithic wall, (b) two walls with a gap and (c) two walls with shear links. Based on non‐linear pushover analysis, it was demonstrated that the modeling of jointed walls using shear links reduces the conservatism inherent in a model neglecting the shear transfer across the joint.

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Section: Test Resultssupporting

confidence: 89%

Section: Literature Reviewmentioning

confidence: 99%

Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

Biswal

Prasad

Sengupta

2018

Structural Concrete

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“…Therefore, it is proposed to design the wire ropes as strong links to avoid such mode of failure. However, the load-carrying capacity of the joint will in this way be governed by yielding of the lock bar in combination with crushing of the joint mortar [4]. This design approach will ensure a warning of failure, especially if the mortar is confined.…”

Section: B Wire Ropes Connectionmentioning

confidence: 99%

Wall to Wall Horizontal Connection for Precast Concrete Structures

2019

IJRTE

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Precast concrete wall is one of the prefabricated components of high demands in the construction industry especially in residential buildings as it combines the benefit of rapid speed of construction, good quality control and minimum labour intensity at the construction site. Precast wall is produced in forms of wall panels and connected in the construction site to form an integrated structural element called precast concrete wall. However, the connection of wall panels is a key factor as it provides the structure integrity and robustness of the overall structural system. Therefore, this paper aims to describe and summarize types of precast wall-to-wall horizontal connection in terms structural behaviours such as embedded length, bonding stress, seismic behaviours and modes of failure. A total number of ten (10) out of eighteen (18) papers will be reviewed and discussed. The findings show that loop connection is suitable for seismically stabile zones as it is not capable to withstand lateral load action effectively whereas wire rope connection has insufficient ductility as the load -carrying capacity is governed by yielding of the lock bar and crushing of the joint mortar. Furthermore, U-shaped steel channel connection, the connection was developed for seismic zones. Providing U-shaped rubber in between the U-shape steel channel has made the connection more flexible with energy dissipater system. Keywords: Precast concrete wall-to-wall connection; structural behaviours of precast wall-to-wall horizontal connections; mode of failure of precast wall-to-wall horizontal connections.

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“…The method for calculating the strength of keyed joints on wire rope loops by a variational method in the theory of concrete plasticity is proposed. This takes into account the proposals [6,7] regarding the determination of the stresses rate that act in wire rope loops in the stage of the joints destruction. Suggestions for resizing a tin box (key) are made.…”

Section: Engineeringmentioning

confidence: 99%

Improved Joints of Reinforced Concrete Elements in Precast-and-Cast-in-Place Construction Based on Destruction Mechanics

Dovzhenko

Pohribnyi

2019

Technology transfer: fundamental principles and innovative tech

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Systematic theoretical and experimental studies of the keyed joints of concrete and reinforced concrete elements have been carried out at PoltNTU over the recent thirty years that made it possible to formulate recommendations for their design and to improve the existing design solutions of joints. The keyed joints have higher bearing capacity. The method for calculating the strength of the joints is proposed. This method is based on the theory of concrete plasticity, the variational method and the principle of virtual velocities. It considers the stage of destruction and takes into account the full set of influence factors. The research takes into account the influence of the following factors on the joints strength: the ratio of the key depth to its height; compression level; the intensity of reinforcement and the nature of the reinforcement location. The keys of a rectangular profile of circular cross section are considered, which are formed in the voids of the slabs at their ends surface when girders concreting. For their reinforcement, a spatial cage in the form of a hollow cylinder is proposed. The results of experimental verification of the quantitative and qualitative influence on the joints strength of these factors are presented. The boundaries of the efficiency of reinforcement intensity, the degree of compression are determined, the optimal ratio of the depth of the key to its height is accepted. The design features of the joints of multi-hollow floor slabs (roofs) with a monolithic girder and between themselves in a precast-cast-in-place frame structural system, with wall panels in large-panel houses, as well as joints of wall panels on flexible loops in large-panel buildings, are taken into account. Examples of improved structural solutions for connecting elements of modern load-bearing systems based on the specifics of their work are given.

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Strength of precast concrete shear joints reinforced with high-strength wire ropes

Cited by 13 publications

References 4 publications

Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

Study of shear behavior of grouted vertical joints between precast concrete wall panels under direct shear loading

Wall to Wall Horizontal Connection for Precast Concrete Structures

Improved Joints of Reinforced Concrete Elements in Precast-and-Cast-in-Place Construction Based on Destruction Mechanics

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